At 7.03pm on Thursday (22) one crew from Cottenham was called to a fire on Cow Lane in Rampton.
Firefighters arrived to find a van on fire and extinguished it using a hose reel. They returned to their station by 8.50pm.
The cause of the fire was deliberate. Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111.